{"data":{"id":"us/40-cfr-52.2271","jurisdiction":"us","citation":"40 CFR 52.2271","heading":"Classification of regions.","body":"(a) The Texas plan was evaluated on the basis of the following classifications:\nAir quality control region Pollutant\nParticulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone\nAbilene-Wichita Falls Intrastate II III III III III\nAmarillo-Lubbock Intrastate II III III III III\nAustin-Waco Intrastate II III III III I\nBrownsville-Laredo Intrastate I III III III III\nCorpus Christi-Victoria Intrastate I II III III I\nMidland-Odessa-San Angelo Intrastate II II III III III\nMetropolitan Houston-Galveston Intrastate I I III III I\nMetropolitan Dallas-Fort Worth Intrastate II III III III I\nMetropolitan San Antonio Intrastate II III III III I\nSouthern Louisiana-Southeast Texas Interstate II I III III I\nEl Paso-Las Cruces Alamogordo Interstate I IA III I I\nShreveport-Texarkana-Tyler Interstate II III III III III\n(b) The proposed priority classifications for particulate matter and carbon monoxide submitted by the Governor on March 21, 1975 are disapproved.\n(c) The revision of section II, classification of regions, submitted by the Texas Air Control Board with the semiannual in 1975 is disapproved.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart SS—Texas"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"192d9338375e4859b4941fd2251f33241837147de6c502e073c712cbe692bfa5","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.2270","next":"us/40-cfr-52.2272"},"notice":"GroundRules: Original legal text. Not legal advice."}